.guide{display:grid;gap:12px}.guide article{display:grid;grid-template-columns:58px 1fr;gap:16px;padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.guide article>span{display:grid;place-items:center;width:52px;height:52px;border-radius:13px;background:#173b5d;color:#75bdff;font-weight:900}.guide h2{margin:0 0 7px}.guide p,.muted{margin:0;color:var(--muted);line-height:1.6}.troubles{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:22px}.troubles>h2{grid-column:1/-1}.troubles>div{padding:18px;border:1px solid var(--line);border-radius:13px;background:var(--surface)}.troubles p{color:var(--muted);line-height:1.5}.chat{border:1px solid var(--line);border-radius:18px;background:var(--surface);overflow:hidden}.messages{min-height:330px;max-height:540px;overflow:auto;padding:22px;display:grid;align-content:start;gap:14px}.empty-chat{display:grid;place-items:center;gap:9px;min-height:280px;text-align:center;color:var(--muted)}.empty-chat strong{font-size:1.5rem;color:var(--text)}.message{max-width:78%;padding:14px 16px;border-radius:14px;background:#17334c}.message.user{justify-self:end;background:#174d79}.message strong{font-size:.82rem;color:#77bfff}.message p{margin:6px 0 0;line-height:1.55}.chat-form{padding:18px;border-top:1px solid var(--line)}.chat-form textarea{min-height:110px;resize:vertical;padding:14px;border:1px solid var(--line);border-radius:10px;background:#061522;color:#fff;font:inherit}.chat-form>div{display:flex;gap:10px}.ai-config{max-width:720px}.ai-config .muted{margin-top:18px}@media(max-width:900px){.troubles{grid-template-columns:1fr}.troubles>h2{grid-column:auto}}@media(max-width:620px){.top nav{grid-template-columns:1fr 1fr}.top nav span{grid-column:1/-1}.message{max-width:94%}}